Antifriction-bearing.



C. W. BEACH.

ANTIFRICTION BEARING. APPLICATION FILED AUG-I, I917.

Patented Fell, 5, 1918.

INVENTOR. W1 TN E55 6565367 15.

'ATTORNEY CHESTER I-I. BEACH, OF RACINE, WISCONSIN, ASSIGNOJR. T0 WISCONSIN ELECTRIC COMPANY, OF RACINE, WISCONSIN, A CORPORATION OF WISCONSIN.

ANTIFJRICTION-BJEARING.

ll,255,3t.

Specification of Letters Patent.

Patented Feb. 5. T91.

Application filed August 1, 1917. Serial No. 183,827.

bearings comprising inner and outer raceways having balls or rollers interposed there: between, this structure being hereinafter referred to as a unitary structure.

The common method of mounting bearings of this type is to fit the inner race-way of the unitary structure snugly about the shaft to be supported and then to fit the outer race-Way of said structure into a suitable housing, this latter fit being what is commonly termed a sucking fit, that is, one wherein the outer race-way frictionally engages the housing but is permitted to creep slightly therein in the direction of rotation and to also move longitudinally thereof with the shaft to compensate for thrusts encountered thereby.

In certain high speed machinery such as high speed portable grinders and other high speed electrical tools this creeplng of the outer race-way within the housing has been found tobe objectionable. It is therefore the object of the present invention to overcome this objectionable feature and to provide means whereby the outer race-way of the unitary structure is prevented rom creeping in a rotary direction within the housing, but is permitted to have a slight thrust movement therein, longitudinally with the shaft, which longitudinal movement is very essential in bearings of this type.

Other objects and advantages will be apparent from the following description taken in connection with the accompanying drawings wherein the preferred embodiment of the invention is illustrated:

Figure 1 is a vertical longitudinal sectional view of a'loearing mounted in accordance with the present invention.

Fig. 2 is a vertical transverse sectional view thereof, and

Figs. 3 and 4 illustrate a slightly modified form of the invention.

Referring more in detail to the drawings, the unitary structure is illustrated at 1 and 1s shown comprising the usual inner and outer race-ways 2 and 3 and the interposed bearings 4. The shaft is indicated at 5, said shaft being snugly fitted within the inner race-way 2 which is adapted to rotate there- Y with. The housing for the unitary structure s illustrated at 6, the outer race-way 3 havmg. as above pointed out, a sucking fit, W1thin said housing. The housing 6 is shown 1n the form of a tubular member, the end of which is provided with a suitable cap 6 designed to keep dust, grit and other foreign substances from contact with said bearing, said cap being spaced slightly away from said bearing, substantially as shown, in order to provide means whereby the outer race-' way 3 thereof may have a slight thrust movement within said housing. As a means, however, of preventing the outer race-way from creeping in a rotary direction within the housing as the shaft revolves, said outer race-way is provided with a suitable slot 7 adapted to receive the end of a plug 8. The plug is preferably mounted in the Wall of the housing substantially as shown. It will be noted from this construction that the outer race-Way is positively locked against rotary creepin regardless of the speed of the shaft, but that by virtue of the slot 7 said race-way may move slightly in a longitudinal direction within the housing to thereby compensate for thrusts encountered by said shaft.

In Figs. 3 and 4 a slightly modified form of the invention is illustrated. In this embodiment the outer race-way is provided with a cylindrical recess 9 instead of a slot such as shown in the preferred form, said recess being adapted to receive the end of the plug 10 corresponding to the plug 8 shown in Figs. 1 and 2.- ltt is obvious that various' plicant desires therefore to cover such changes and modifications in the construction shown as fall Within the scope of the appended claim. A

Having thus described my invention, What I claim as new and desire to secure by Letters Patent of the United States is 2-- The combination with a unitary structure comprising inner and outer race-Ways hav- 10 ing bearings interposed therebetween, of :1

housing for said unitary structure, a slot in the outer race-way of said unitary structure, and means carried by said housing projecting into said slot to prevent said outer race-Way from creeping in a rotary direction Within said housing, but permitting the same to move in a longitudinal direction therein.

In Witness whereof, I hereunto subscribe my name this 28th day of July, A. D. 1917.

CHESTER H. BEACH. 

